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单词 bone ash
释义

WordReference Random House Unabridged Dictionary of American English © 2024
bone ash′, 
  1. Chemistry, Ceramicsa white ash obtained by calcining bones, used as a fertilizer and in the making of bone china. Also called bone earth′. 
  • 1615–25

Collins Concise English Dictionary © HarperCollins Publishers::
bone ash n
  1. the residue obtained when bones are burned in air, consisting mainly of calcium phosphate. It is used as a fertilizer and in the manufacture of bone china
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